61 lines
1.3 KiB
Rust
61 lines
1.3 KiB
Rust
/* char.rs
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* Eryn Wells <eryn@erynwells.me>
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*/
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use lexer::charset;
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pub trait Lexable {
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fn is_left_paren(&self) -> bool;
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fn is_right_paren(&self) -> bool;
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fn is_identifier_initial(&self) -> bool;
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fn is_identifier_subsequent(&self) -> bool;
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fn is_identifier_single(&self) -> bool;
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fn is_hash(&self) -> bool;
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fn is_boolean_true(&self) -> bool;
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fn is_boolean_false(&self) -> bool;
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fn is_newline(&self) -> bool;
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fn is_comment_initial(&self) -> bool;
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}
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impl Lexable for char {
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fn is_left_paren(&self) -> bool {
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*self == '('
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}
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fn is_right_paren(&self) -> bool {
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*self == ')'
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}
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fn is_identifier_initial(&self) -> bool {
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charset::identifier_initials().contains(&self)
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}
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fn is_identifier_subsequent(&self) -> bool {
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charset::identifier_subsequents().contains(&self)
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}
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fn is_identifier_single(&self) -> bool {
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charset::identifier_singles().contains(&self)
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}
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fn is_hash(&self) -> bool {
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*self == '#'
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}
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fn is_boolean_true(&self) -> bool {
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*self == 't'
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}
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fn is_boolean_false(&self) -> bool {
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*self == 'f'
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}
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fn is_newline(&self) -> bool {
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*self == '\n'
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}
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fn is_comment_initial(&self) -> bool {
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*self == ';'
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}
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}
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